Erbijsommen tot 20
Erbijsommen
|
1.
16 + 0 =
16
7
|
2.
4 + 15 =
14
19
|
3.
15 + 0 =
2
15
|
4.
20 + 0 =
15
20
|
|
5.
4 + 15 =
2
19
|
6.
4 + 4 =
8
1
|
7.
13 + 6 =
19
14
|
8.
17 + 1 =
3
18
|
|
9.
20 + 0 =
20
2
|
10.
2 + 9 =
11
2
|
11.
17 + 0 =
17
6
|
12.
11 + 6 =
17
10
|
|
13.
4 + 15 =
19
9
|
14.
7 + 13 =
5
20
|
15.
10 + 7 =
17
12
|
16.
15 + 5 =
20
13
|
|
17.
3 + 0 =
6
3
|
18.
1 + 12 =
15
13
|
19.
15 + 1 =
10
16
|
20.
15 + 1 =
1
16
|